Abstract: With the improvement of my country's comprehensive strength, science and technology are also developing faster and faster. At the same time, the development of various industries in our country has set higher standards for surveying and mapping engineering to adapt to the current progress of various industries. In surveying and mapping engineering surveying, UAV remote sensing technology has made a qualitative leap, and it has also been widely used in surveying and mapping engineering surveying. Unmanned aerial vehicle remote sensing technology has very powerful advantages. It can measure different terrains, and at the same time, it can quickly obtain corresponding data to promote the development of surveying and mapping engineering. This article starts with the advantages of UAV remote sensing technology and analyzes the application of UAV remote sensing technology in the surveying process of surveying and mapping engineering.